A software development blog

Latest posts

• Webgear server + Halogen client

  Posted September 16, 2022

  Tags: Computer, Software, Functional, Internet, Web, API, JavaScript, WebAPI, Haskell, PureScript, Nix, Webgear, Halogen

  The Webgear realworld Haskell example (server) and the Real World Halogen Purescript example (client) combined into Conduit (gothinkster/realworld) — what’s described as “The mother of all demo apps” (fullstack Medium.com clone)

  Read more

• Webgear off-label experimentation

  Posted September 8, 2022

  Tags: Computer, Software, Functional, Internet, Web, API, WebAPI, Haskell, Nix, Webgear

  Some quick ‘off-label’ experimentation with WebGear (a high-performance framework to build composable, type-safe HTTP APIs. It is designed to make common API development tasks easy. It is also easily extensible to add components needed by your project. – haskell-webgear/webgear). Also see earlier Webgear post.

  Read more

• Webgear

  Posted September 6, 2022

  Tags: Computer, Software, Functional, Internet, Web, API, WebAPI, Haskell, Nix, Webgear

  WebGear is a high-performance framework to build composable, type-safe HTTP APIs. It is designed to make common API development tasks easy. It is also easily extensible to add components needed by your project. – haskell-webgear/webgear (by Raghu Kaippully).

  Read more

• A generator that updates cert_fingerprints in .offlineimaprc

  Posted May 2, 2022

  Tags: Computer, Software, Internet, Linux, Haskell, EMail, IMAP

  A generator that updates cert_fingerprint lines in .offlineimaprc configuration file. OfflineIMAP is a GPLv2 software to dispose your mailbox(es) as a local Maildir(s), which can be used with notmuch to retrieve mail from (several) IMAP servers and read and search through it.

  The configuration contains cert_fingerprint lines to store certificates, which get outdated frequently and need to be updated. The updating is a bit of a hassle, hence this automated solution, which generates a .offlineimaprc file from a template file .offlineimaprct (created by you).

  Read more

• Date in URL Image scraper

  Posted November 22, 2021

  Tags: Computer, Software, Internet, Linux, Haskell, HTML

  A Haskell program that uses the Conduit library to retrieve and store image files with Network.HTTP.Conduit, which are accessible via an URL with a date in it. The images are stored in an images subdirectory with the date in the filename. The program skips URLs that do not return a HTTP status code of 200 (e.g. weekends, holidays, or other periods without images available) and generates an exception if the status code is not in the 2xx range. The exception is rethrown when the status code is not 404. This all has no practical use at all but I wanted to see how exceptions are handled in conduits.

  Read more

See the archives and links for more.